/Engine/Plugins/Animation/IKRig/Source/IKRig/Public/Retargeter/IKRetargetProcessor.h
struct FRetargetChainPairIK : public [FRetargetChainPair](API\Plugins\IKRig\Retargeter\FRetargetChainPair)
FChainRetargete...
IKChainRetargeter
FName
IKGoalName
FName
PoleVectorGoalName